Peter Mantas is the head of the Ottawa litigation group, co-leader of the firm’s White Collar Defence and Investigations group, and leader of the firm’s Procurement group.
In his practice, Peter has particular expertise in matters involving government, media, emerging technologies, mining, Indigenous affairs, transportation, competition, national security and trade. His experience covers corporate/commercial, administrative and criminal cases, and includes investigations, negotiations, mediation, arbitration, jury trials and cross border disputes.
Clients appreciate Peter’s strategic advice, careful preparation and tough but reasonable approach. Frequently retained to represent clients in sensitive, high-profile matters, he is valued for his understanding of reputational risk, media relations and crisis management. He is an avid user and proponent of technology in the litigation process in order to reduce costs and achieve better results, and has considerable experience in cases involving a large and complex documentary record.
An experienced litigation lawyer, and member of the Bars of Ontario and New York, Peter has acted in some of the most prominent cases in the country. He has appeared before numerous judicial bodies and tribunals including the Supreme Court of Canada, the superior courts of Ontario, numerous provincial and territorial courts across Canada, the Federal Court of Canada, the Canadian International Trade Tribunal, and arbitration panels.
On the global stage, Peter is frequently retained to represent clients in international arbitration and court proceedings. He has appeared as legal counsel in matters in London and New York, and acted as special counsel in various jurisdictions in Africa. He has also appeared as an expert witness in proceedings in France. In addition, Peter is a contributor to the World Bank’s report on contracting with government in Canada. He is a frequent advisor on international trade matters, particularly involving Canada and Europe.
Peter’s expertise has been recognized by Chambers, Benchmark Litigation, Legal 500 and Best Lawyers in Canada. He has been nominated in Canadian Lawyer magazine as one of the 25 most influential lawyers in Canada. In 2020 he was invited to become a Fellow of the Litigation Counsel of America.